Updated SMB3.1.1 client patches for implementation of parent lease key

[Steve French]

Attached are updated patches from Henrique (potentially very
important) to set the ParentLeaseKey for SMB3/SMB3.1.1 mounts.  I
fixed some minor checkpatch/sparse warnings and have tentatively added
them to cifs-2.6.git for-next and running tests on them now

[PATCH] smb: client: add ParentLeaseKey support
According to MS-SMB2 3.2.4.3.8, when opening a file the client must
lookup its parent directory, copy that entry’s LeaseKey into
ParentLeaseKey, and set SMB2_LEASE_FLAG_PARENT_LEASE_KEY_SET.

Extend lease context functions to carry a parent_lease_key and
lease_flags and to add them to the lease context buffer accordingly in
smb3_create_lease_buf. Also add a parent_lease_key field to struct
cifs_fid and lease_flags to cifs_open_parms.

Only applies to the SMB 3.x dialect family.

Fixes: f047390a097e ("CIFS: Add create lease v2 context for SMB3")
Signed-off-by: Henrique Carvalho <henrique.carvalho at suse.com>




-- 
Thanks,

Steve
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